Question

How did the Great Schism of 1378 to 1417 (also known as the Western Schism) impact the Roman Catholic Church?

Answer 1

@wmckinely

Answer 2

It called into question the credibility of the papal lineage after it was split into two different camps for a time -- the anti-popes at Avignon and the papacy at Rome. It confused people as to who the "true" popes were which cast doubt on the authoritative unity of the Church.